add custom plugins

lua/custom/plugins/autopairs.lua

@@ -0,0 +1,17 @@
+-- File: lua/custom/plugins/autopairs.lua
+
+return {
+  "windwp/nvim-autopairs",
+  -- Optional dependency
+  dependencies = { 'hrsh7th/nvim-cmp' },
+  config = function()
+    require("nvim-autopairs").setup {}
+    -- If you want to automatically add `(` after selecting a function or method
+    local cmp_autopairs = require('nvim-autopairs.completion.cmp')
+    local cmp = require('cmp')
+    cmp.event:on(
+      'confirm_done',
+      cmp_autopairs.on_confirm_done()
+    )
+  end,
+}

lua/custom/plugins/filetree.lua

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+-- Unless you are still migrating, remove the deprecated commands from v1.x
+vim.cmd([[ let g:neo_tree_remove_legacy_commands = 1 ]])
+
+return {
+  "nvim-neo-tree/neo-tree.nvim",
+  version = "*",
+  dependencies = {
+    "nvim-lua/plenary.nvim",
+    "nvim-tree/nvim-web-devicons", -- not strictly required, but recommended
+    "MunifTanjim/nui.nvim",
+  },
+  config = function ()
+    require('neo-tree').setup {}
+  end,
+}

lua/custom/plugins/scrollbar.lua

@@ -0,0 +1,6 @@
+return {
+  "petertriho/nvim-scrollbar",
+  config = function()
+    require("scrollbar").setup {}
+  end,
+}